Classification of matter

Which statement best describes how the use of gasoline in a car relates to the discipline of chemistry? A.) The materials used come from the ground. B.) The gasoline undergoes a change as it burns. C.) A car uses the gasoline to move. D.

What is Non science?

In many of the steps in the lab, a mixture was centrifuged and then decanted. In general terms, what is accomplished by these steps? In what kind of situation would these steps not be able to separate two compounds?

most elements have several stables but some such as lithium, boron, and copper have 2. Consider one such element (it doesn't matter which one). If the abundance of one isotope is 0.1266 what is the abundance of the other isotope?

Which mass of urea CO (NH2) 2 contain the same mass of nitrogen as 101.1g of potassium nitrate?

Which element above has 8 protons in its nucleus? a. oxygen b. carbon c. phosphorus d. sulfur

If the copper is drawn into wire whose diameter is 9.50 mm, how many feet of copper can be obtained from the ingot? The density of copper is 8.94 g/cm3.

Angle of incidence equals angle of this A. Reflection B. Refraction C. Diffraction

When conducting an experiment, a scientist should: (a) attempt to test every possibility (b) attempt to control the conditions (c) place no limits on the investigation (c) proceed without specific goals

Can atoms be divided into smaller pieces